Touch screen testing device

Abstract

The invention discloses a touch screen testing device. The touch screen testing device comprises a touch screen, a signal switching isolation board, a touch screen testing board, and a computer. One end of the touch screen is connected with a first connection line. One end of the signal switching isolation board is connected with the other end of the first connection line, and the other end of the signal switching isolation board is connected with one end of a second connection line. One end of the touch screen testing board is connected with the other end of the second connection line. The computer is provided with a USB interface, and the other end of the touch screen testing board is connected with the USB interface by a USB connection line. The touch screen testing device is advantageous in that the signal switching isolation board is additionally disposed between the touch screen and the touch screen testing board, and then electric signal isolation between the touch screen testing board and the touch screen is realized; the ground of the touch screen is disconnected from the ground of the computer, and then the touch screen is in a suspended state; and at the same time, normal data transmission between the computer and the touch screen is realized, and then objects such as debugging and testing are achieved.

Description

technical field [0001] The invention relates to the technical field of touch screen testing, in particular to a touch screen testing device. Background technique [0002] The detection principle of the capacitive touch screen is that when the human finger touches the surface of the screen, the finger absorbs part of the charge through the human body, and the amount of charge absorbed depends on whether the ground of the device is shared with the human body. When the ground of the device is shared with the human body, the amount of charge absorbed is relatively large, and the sensitivity of touch is high. When the ground of the device is different from that of the human body, the amount of charge absorbed by the human body is relatively small, which may easily cause the touch screen to be insensitive. However, among handheld devices, such as mobile phones and tablets, in addition to being used in the hand, they may also be placed on insulated desktops, pillows, sofas, etc., ...

AI Technical Summary

Problems solved by technology

In this case, it is impossible to debug and detect the suspension effect of the touch screen. It is necessary to install the touch screen on the handheld device for testing and verification.

The main problem with this test method is that if the test process is relatively late (the equipment factory assembles the product before testing), once the test fails, it needs to be disassembled for repair and re-testing, which will cause a lot of waste and loss.

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